Improvement in steam-boilers



N.PETERS. PHOTO-LITHOGRAHER, WASHINGTON, D. c.

tnitt %taia (tutti effin.

`EEEDEiltroK sULrEE, or oLEVELA'ND, oHIo.

Letters Patent No, 110,004, dated December 27, 1870.

l IMPROVEMENT IN STEAM-Bodens.

The Schedule referred to in theyre Letters Patent and making of -the same.

Figure 2 exhibits the front andv fire-place' of` theA same.

Figure 3 shows the rear end and smoke-pipes.

To enable others skilled inthe art to niakeand'use my invention, I will proceed to describe its construction and 0peration,as follows: The nature of my invention consists iu the arrange-- ment and construction of a sheet-metal chamber ex tending from the front to the rear -of the boiler, to contain water, and smoke-pipes extending also the whole length of the boiler on each side at top of the boiler, and apertures along each side of the boiler.

A represents a plate at the inner side of the air chamber B, suspended upon a hinge, O, at the top of the plate, so that it cau-be raised and lowered by means of the rack D and pinion E, by which the plate is raised at any angle in the air-chamber, as shown by the vdotted lines, so as to catch and drop the cinders or sparkswhen required, andto diminish the si'ze of the air-chamber by the adjustment of the plate A. F F are vents Aor closed apertures of the air-chamber, vto regulate the draught when required.

G is a water-chamber, made of she'etmetal, extending thewhole length of the boiler, and surrounding the fire-hearth H, the draught-chamber I, the lower half of the boiler-cylinder J, and the air-chamber B, so as toregulate the heat fromV the fire-place and prevent a sudden cooling or collapsing of the boiler. v

. `K K ate apertures in the steam-boiler J, along the whole lengthoi` the boiler.

L is an aperture through the side, iu which a nozzle, L, isinserted, and through which a spray of steam can ,be thrown upon the fire when .n ecessary,vthe nozzle havn'gsmall tubes on the end to spread the steam to create a greater heat when required. This nozzle is permanently attached to the side of the frame below the fire-hearth, on the insideat the ash-pan, and I intend to use a pipe, connected. with the top of the steam-boiler or the escape-tube to the nozzle L.-

" N are air-tubes :leading from. the ash-pan. to the frame above.4 ,l

P is an oblique aperture to carry cold air into the fire-chamber. RR are hemispherical caps upon the smoke-pipes The smoke-pipesextend. horizontally on each side of the" boiler J, from the front to tliejrear, where theyjproject upwaldnd are protected by the'hemispherical caps R R, that prevent the wind from ailecting thedrau'ght or regular escape of the smoke.

The darne passes lfrom the n're-hearth-iu front to the air-chamber B. in. the rear, and then returns to the front and escapes at the. chimney l. The arrows showthe course ot the tlame. I

. hat I claim as my invention, and desire to secure by LettersPatena'i's-e The arrangement ot" the water-chamber. G, smokepipes -S S,'andappel-tures` K K, when constructed and` combined withv the boiler-cylinder ashercin de lscribed,`and'for the purposes sot forth.

Witnesses: "FREDERICK SUL'IER.V

J. FRANKLIN REIGAET. EDM. lF. BROWN. 

